已知四棱锥的底面是矩形底面点分别是棱中点则 �棱与所在直线垂直 �平面与平面垂直 �的面积大于的面积 �直线与直线是异面直线 以上结论 Template




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tomski已知四棱锥的底面是矩形底面点分别是棱中点则 �棱与所在直线垂直 �平面与平面垂直 coloring